Littelfuse 312 Series User Manual
Axial lead & cartridge fuses
© 2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/19/13
Axial Lead & Cartridge Fuses
3AG > Fast Acting > 312/318 Series
312/318 Series Lead-Free 3AG, Fast-Acting Fuse
The 3AG Fast-Acting Fuse solves a broad range
of application requirements while offering reliable
performance and cost-effective circuit protection.
Agency Approvals
Agency
Agency File Number
Ampere Range
E10480
AU1410
312 Series: 62mA - 10A
318 Series: 62mA - 10A
312 Series: 12A - 30A
LR 29862
312 Series: 62mA - 30A
318 Series: 62mA - 10A
PS
E
NBK040205-
E10480B/F
312/318 Series: 1A - 10A
E10480
318 Series: 12A - 30A
SU05001-
5005/5006/6005/6008
312/318 Series:
1A/ 1.25A / 1.6A/
2A - 10A
312 Series: 62mA - 10A
318 Series: 62mA - 10A
Features
Electrical Characteristics for Series
Applications
% of Ampere
Rating
Ampere Rating
Opening Time
100%
62mA – 35A
4 hours, Minimum
135%
62mA – 35A
1 hour, Maximum
200%
10mA – 10A
5 sec., Maximum
12A – 30A
10 sec., Maximum
35A
20 sec., Maximum
• In accordance with UL
Standard 248-14
• Available in cartridge
and axial lead format
and with various forming
dimensions
• RoHS compliant and
Lead-free
Used as supplementary protection in appliance or
utilization equipment to provide individual protection for
components or internal circuits.
PS
E
Description
Additional Information
318 Series
312 Series
318 Series
312 Series
318 Series